Abstract
Bistatic radar signal processing often assumes a constant velocity for target detection. The bistatic geometry alters, however, the effectively measurable velocity in relation to the target position and motion even if the target has a constant ground speed. Hence, the bistatic geometry induces instantaneous bistatic target acceleration. This is especially the case if a straight-line target trajectory cuts across several closely spaced velocity isolines. The letter tries to quantify this geometry-induced instantaneous bistatic acceleration, in general, for straight-line target trajectories. Thereby, position-dependent acceleration values are derived for a practical use case.
Highlights
A bistatic pulse-Doppler radar estimates the target distance and velocity using the propagation delay and instantaneous phase differential of individual frequency carriers
This section introduces a simple bistatic radar scenario in which a straight-line target trajectory crosses the baseline with a constant ground speed
Even though a bistatic geometry has been used, the effect is present in mono- and multistatic geometries as well
Summary
A bistatic pulse-Doppler radar estimates the target distance and velocity using the propagation delay and instantaneous phase differential of individual frequency carriers. The relative ranges and angles vary simultaneously with respect to the individual nodes along the target trajectory. These variations have an instant impact on the effective bistatic velocity veff. Malanowski et al stated in [5] that the effective velocity change within the CPI shall be less than a velocity resolution cell They further estimated that a velocity of 100 m/s caused a single digit m/s2 acceleration in their particular bistatic FM passive radar geometry. Allen et al gave a monostatic derivation in [2, p.693] This shall be extended to bistatic radar geometries accompanied by practical values
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IEEE Transactions on Aerospace and Electronic Systems
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
